Ecotoxicological effects of Trichloroethene upon plankton

Autor:	M.E. Herrmann, J.‐P. Lay
Rok vydání:	1991
Předmět:	Health Toxicology and Mutagenesis fungi Biota Biology Plankton biology.organism_classification Pollution Population density Zooplankton chemistry.chemical_compound Algae chemistry Productivity (ecology) Environmental chemistry Phytoplankton Environmental Chemistry Trichloroacetic acid
Zdroj:	Toxicological & Environmental Chemistry. 31:409-416
ISSN:	1029-0486 0277-2248
Popis:	A case study in an experimental pond was performed to evaluate the ecotoxic effects of Trichloroethene (TRI) upon the population density and productivity of phyto‐ and zooplankton. TRI was continuously released into two pond enclosures over 11 weeks (mean concentrations 1.5 and 7.5 mg/l). The chronic chemical treatment showed distinctive toxic influences upon the biota. Following the high TRI concentration, the phytoplankton density slightly increased; the productivity per single cells, however, was significantly reduced compared to the controls and the low TRI concentration. Cryptophyceae were the most sensitive algae taxa. The density and reproductivity of Daphniae and Phyllopodae decreased by the high TRI concentration. Most of the Rotatoriae were not negatively influenced. With increasing TRI concentrations two different bacteria forms showed a mass development. Small amounts of Trichloroacetic acid were detected in both enclosures as a conversion product of TRI (∼3 μg/l after 80 days treatment).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::477db874354dcd133e14a5ff74e9997c https://doi.org/10.1080/02772249109357715 Zobrazit plný text záznamu